Smoke-tube superheater.



" P. THOMSBN.

' SMOKE TUBE SUPBHHEATEE.

APPLICATION HLED AUG. 21, 1913.

2% w mcwmf Patented-Nov. 10, 1914.

4 SHEETS-SHEBT 1.

INVENTOI? PETER THUMfSE/V MTORA/EVS P. THOMSEN.

SMOKE TUBE SUPBRHEATER.

APYLIOATION TILED AUG. 21 1913.

1 fifiqkcfio Patented Nov. 10-, 1914 4 SHHETSSHBET 2.

GMflua/MW MTORNEYS P. THOMSEN.

' SMOKE TUBE SUPERHEATER. APPLICATION FILED AUG. 21, 1913;

m1 165,6 4% Patnted Nov; 10, 1914.

Wm/Es's s: INVENTOR PETER THUMSEI/ 2 a4 m ITTORNEYS P. THO MSEN. SMOKETUBE SUPER-HEATER. APPLICATION IILS'D AUG. 21,1913.

1 ,116,646.. Patented Nov. 10, 914

'I\SHE}ITSBHEET .4

; WITNESSES:

23 7, .p m r'z zx T117 13 1 By I manners recruit THOMSE-N, orCassst-witnnmvisnonLs. GERMANY, .assIeNon IO scmutntr *sensHEISSDAIVIPEGESELLSCRAFT M. :s. H., or CASSEL-WIL- HnLMsHoI-In, GERMANY,A oonrolm'rron or GERMANY.

SMOKE-TUBE SUIPEEHEATE'JR.

talents.

To all whom it may; normcrn Be it known that l, ln'rnn THOMSEN, asubject of the King of Prussia, Emperor of Germany, residing atCassel-ld ilhelmshohe, Germany, have invented a certain new and usefulimprovement in Smoke-Tube Superhcaters, of which the following is aspeclfication.

My invention relates to steam superheaters which are known as the smoketube type and is particularly applicable to such super heaters when usedin connection with steam locomotives.

My invention relates particularly to the arrangement of the ends of thesuperheater elements as they come out of the line tubes and go to thesuperheater headers. lln superheaters of this type it is usual toarrange the superheater elements in a plurality of rows of fine or smoketubes and to carry the ends of said elements either up or down, to theright or to the left, to the superheater headers with which they must beconnected. In some cases, instead ol -carrying all of the ends in thesame direction, the saturated ends have beencarried in one direction toa suitable saturated "header, while the super heated ends have beencarried in the opposite direction to the superheated header. insuper-heaters arranged as just (let-:rrilml, the ends of the severalelements usually cover one another, as viewed from the front of theboiler, so that while each individual element may be removed, theelements may only be removed in a certain definite order. To remove thelast element of a certain row, that is the element whose ends lienearest; the

tube, it is, therefore, necessary to first remove every other element ofsaid row.

It is the object of the present invention to diminish this difliculty.

The invention accon'lplishes the specified object by arranging thesuper-heater elements belonging to each row oi flue tubes in two groupsthe ends of which are so carried to the header that the ends of onegroup leave toward one side of the row, while the ends of the othergroiilp leave toward the other side of the row. In. accomplishing thisthe ends of the elements are so bout that any I element of one group mayhe removed from the flue tubes without disturbing; any ele ment theother group. As a consequence Specification of Letters Patent.

Application filed August 21, 1913.

Fatented Nov. 10, 1914 Serial No. 785.828.

of this arrangement the several elements of a given row are no longerdependent upon one another but only dependent upon the elements of theparticular group to which it belongs. In a row having four elements,therefore, it is never necessary to disturb more than one other elementin order to re move a. given element.

; The arrangmnent of this invention is especially applicable to suchsuperheaters as have their elements in enlarged tlue tubes which areusually made to contain four lengths of superhcater tubes side by side.In super-heaters so arranged, the ends of the elements may beconveniently connected directly to the steam headers by means of screwsor flanges, so that an individual ele ment is very easily removed. Buteven in superlnzaters having; the elements in Hue tubes of normaldiameter, this invention serves a very useful purpose. In suchsuperheaters it would be diflicult to connect the clen'icnt ends to thesteam headers by reason oi. the lack of suthcient space for screws andflanges or other connecting devices. It is possible, however, when smallfine tubes are used, to carry the superheater element ends tointermediate steam chambers or sul h elders which thcn'lselvcs aredirectly fastened. to (hennain steam headers. Or, the ends oi the smalltube superheater elements may be joined directly to the main steamheaders by expanding, welding or in some equivalent manner.

My invention will be better m'lderstood with reference to the drawingsin which Figure l re 'n'escnts an elevation taken from the front oi partof a boiler embodying one form oi my invention; Fig. 2 represents a partelevation taken along the line 22 of Fig. 1; Fig. 3 represents a view,similar to Fig. 11, showing another embodiment of my invention and Fig.4- a view, similar to Fin. 2, taken along the line i -4i of Fig. 3; Fig.5 showing a third embodiment oi my invention and Fig. (5 a view similarto Fig. 2 taken along the line l'3--6 of Fig. 5; Fig. 7 represents aview similar to Fig. 1 showing a fourth en'ibodin'lent oi my inventionand Fig. 8 a view similar to Fig. 2 taken along the line 8--8 of 7 Fig.9 represents a view similar to Fig. 1 showing a fifth embodi-IOPI'PSGTHTS a view, similar to Fig. 1,

- ment of m invention and. Fig. a view similar to ig. 2 taken along theline 10l0 of Fig. 9; Fig. 11 represents a view similar to Fig. 1 showinga modification of my invention in which two rows of flue tubes take theplace of one row of the earlier em bodiments, and in which eachsuperheater element lies in two ubes, one belonging to one row of fluetubes and the other belonging to an adjacent row of flue tubes; Fig. 12represents a view similar to Fig. 2 taken along the line 12l2 of Fig.11; Fig. 13 represents a view similar to Fig. 1 showing still anothermodification of my invention and Fig. 14 a view similar to Fig. 2 takenalong the line 1 l-1 l of Fig. 13.

Referring to the drawings, (Figs. 1, 2) the saturated and superheatedheaders a and I) lie respectively above and below the vertical row ofsuperheater elements and transversely thereto. The flue tubes of thisrow are designatedrespectively as 0, c, d and d, c and 0 each containinga single superheater element 6 and 6' respectively, and d and d eachcontaining a single superheater element f and f respectively. Theelements e and e belong to one group and the elements f and f to anothergroup. In this arrangement it will be noticed that the two ends of theuppermost superheater elements 6 are carried to the left of the row, oneend 9 going up to the saturated header a and the other end 9 down to thesaturated header 6. The ends 71. and h of the other element e belongingto this group are also carried to the left, but behind the ends 9 and gof the element a, and go up and down respectively to the saturated andsuperheated headers. Similarly, the elements f and f have their endscarried to the right of the row and extend up and down to the headers,the ends of one element lying behind the ends of the other element.Theelements e or j" may be instantly removed as soon as the connectingmeans binding them to the headers is released, while elements e or f maybe. removed similarly by first removing either 6 or element'f as thecase nlay be. in this modification each element lcoinprises fourparallel lengths of super-heater tube contained in a single flue tube.

In the modification shown in Figs. 3 and 4 each element comprises fourlengths of su erheater tube, two lengths in one flue tu e and twolengths in an adjacent flue tube. Another similar element also has twolengths in one of these flue tubes and two lengths in the other fluetube. Thus each flue tube contains as before, four superheater elementlengths, two lengths belonging to one element and two lengths belongingto another element. In this modification the element e has two of itslengths, in the upper flue tube and its other two lengths in the nextlower flue tube the upper end being carried to the right and up to thesaturated header a and the lower end being carried to the right and.down to the superheated header '1). The other element of the group,

6', has two of its lengths on the right of.

the third flue tube and two of its lengths on the right of the bottomflue tube, the upper end being carried to the right and up to thesaturated header a, and the lower end to the right and down to thesuperheated header 1), but both upper and lower ends lying behind thecorresponding ends of element 0. In the same way the elements f and flie respectively in the top two and the bottom two flue tubes on theleft of the row with their ends carried out to the left and up and downto the headers, one set of ends behind the other.

In the modification shown in Figs. 5 and 6, the row contains but threetubes, each containing four lengths of s'uperheater pipe belonging to asingle element. The two upper flue tubes contain respectively the'twoelements-e and e of one group, while the bottom flue tube contains theelement 7 which is the only element of the other group. The ends ofelements e and e belonging to one group are carried to the left and upand down respectively and in front of one another as are the elements 6and e of Figs. 1 and 2, while the ends of the element f are turnedaround to the right and up and down. The element 7 has clearly nothingto interfere with its removal and as to the elements e and e, the lattercan be interfered with only by element 6 and may be removed after firstremoving said element.

In the, arrangement shown in Figs. 7 and 8 both headers a and b arearranged above the row, the upper two flue tubes containing thetwoelements e and e belonging to one group, and the other flue tubes theelements f and f belonging to the other group. Each element comprisesfour tube lengths, two of said lengths lying in one flue tube and two inthe adjacent flue tube.

Referring to Figs. 9 and lO-both headers 'here as in the previousmodifications comprise four tube lengths. The upper two flue tubescontain two elements of two groups, the elements lyingon the left withtwo of its lengths in the top tube and two of its lengths in the nextlower tube, while the element f lies similarly on the right. The thirdflue tube contains the four lengths of the element 6 and the fourth ofthe tube contains the four lengths of the element 1. The ends of eachelement lie in a single plane but these planes are all diflerent to oneanother so that the ends of no one element lie in front of the ends ofany other element. Any element, therefore. may be removed withoutinterference with any other element of either group.

In the arrangement shown in Figs. 11 and ii ll 12 the two headers areagain, as in the earlier modifications, arranged respectively above andbelow the double row of fine tubes. t should be noted that in thisarangemeht, two sets of vertically disposed flue tubes of a double roware staggered relatively to one another. Each element as, in all theother modifications, has four tube lengths, but in this arrangement twolengths lie in a tube on one side of the double row, while the other twolengths lie in the lower tube on the other side of the double row. T hepairs of tlue tubes belonging to the in dividual units may be designatedas 1, 2, 3 and 4. The element'fehas two lengths in each tube of pair 1.,the two ends being carried respectively right and left and up and downto the two headers. The element e lies in the set of line tubes 2, withits ends respectively behind the ends of the element, e and going to theheaders similarly. Elements f and are arranged respectively in the setsof flue tubes 3 and 4, the end of said elements being respectivelybehind one an other and extended to the right and left and up and down,but to the left and right respectively of the corresponding; ends ofelements e and c.

In the modification shown in Figs. 13 and 14 there are S flue tubes in arow, these flue tubes being assumed to be normal diametcred tubes sothat each tube is capable of containing only two lengths of superheaterelements, each element however comprises four lengths of super-beatertube as before so that each element is disposed in each of two fluetubes, two lengths lying in one flue tube and the other two lengthslying in the next adjacent tube. The line tubes may be designated as 5to 8"inclusive. The upper four flue tubes contain the two elements a ande of one group while the lower tour flue tubes contain the two elementsf and f of the other group. The ends of the ole merits or each group liebehind one another and are extended to the left and right respectivelyand up and down to the headers. llo individual element may be removedwithout at the same time removing the other element of the group, but noelement of one group interferes in any way with an element of anothergroup.

llavingr described my invention, I claim:

1. ll smoke tube superheater comprising, in combination, a boilerprovided with parallel rows of smoke tubes, sets of superh ater elementsat least three to a set an ranged in rows corresponding; to smoke tuberows, and steam collectors for saturated and superheated steamrespectively, the ends oi the superheater elements being joined to saidcollectors and all the said elements of a given set having" their endsarranged in one or the other of two groups and in dill"- l erent planesparallel to the smoke tube rows so that any element of a given group maybe inserted or removed without interfering with any element of anothergroup.

2. A smoke tube superheater comprising, in combination, a boilerprovided with parallel rows of smoke tubes, sets of superheater elementsat least three to a set arranged in rows corresponding to smoke tuberows, and steam collectors for saturated and superheated steamrespectively, the end of. the su erheater elements being joined to saidco lectors and all the said elements of given set having their endsarranged in one or the other of two groups and in dit ferent planesparallel to the smoke tube rows the ends of said two groups being bentoppositely but parallel .to the plane of the flue tube rows, as and forthe purpose described.

3. A smoke tube superheal'cr comprising, in combination, a boilerprovided with par allel rows of smoke tubes, sets of superheaterelements at least three to a set arranged in rows COITQSPOIXCllIlg tosmoke tube rows, and steam collectors for saturated and superheatedsteam respectively, the ends of the-superheater elements being; joinedto said collectors and all the said elements of a given set having theirends arranged in one or the other of two grou is said ends of said twogroups being bent to lie in different 'ilanes parallel to the smoke tuberows, thereby lying side by side they en ter the steam collectors, andconnecting means extending between adjacent ends in. different planesfor uniting said ends to the steam collectors.

l. A smoke tube superh atcr coi'nprising, in combination, a boilerproviitlcd with par allel rows of smoke tubes, sets of super heaterelements at least three to a ar ranged, in rows corresponding tosmoke'tubc rows, and steam collectors for saturated and superheatedsteam respectively, the ends of the superhcater elements being joined tosaid collectors and all the said elements of a given sethavinptheir endsarranged in one or the other oi two groups the ends oi all of saidgroups being bent to lie in dillerent planes pa allel to the smoke tuberows thereby lying side by side as they enter the steam collectors,there being at least twice as many planes for the element ends as thereare rows of smoke tubes, and connectingmembers perpendicular to saidplanes, extending between adjacent ends in dili'eront planes for unitingsaid ends to the steam col- 5. A smoke tube superheatcr eon'iprisii'ig,in combination, a boiler provided with paw allel rows of smoke tubes,sets of superheater elements at least tires to a set arranged in rowscorrespoiu'ling to smoke tuberows, and steam collectors for saturatedand superheated steam respectively, the ends of lid lllltl Mill Illllithe superheater elements being joinsd to said perpenicular to saidplanes and having cencollectors and all the said elements of a givenL121 bolts going. into the steam collector. set having their endsarranged in ens 0. the ln iestimany whereof, I have hereunto set otherof two groups the ends of all of said my hand in the presencs of twosubscribing 5 groufislbeing bent i130 liebin diifsrent planes witnesses.

am e .00 me smo re tn 6 rows thereb 1 ng side by side as they enter thesteang cc PETER THOMSEN' lectors, there being at Least twice as manyWitnesses: planes for the element ends as there are rows JULIUS FRANK,10 of smoke tubes, and connecting members 1 GUSTAV RETTIG.

